arXivDaily arXiv每日学术速递 周一至周五更新
arXiv quant-ph/0410245quant-ph
收藏

关于张量积结构的相对量子纠缠

On the relative quantum entanglement with respect to tensor product structure

X. F. Liu, C. P. Sun

摘要:

严格地建立了Zanardi等人提出的量子张量积新概念的数学基础。引入相对量子纠缠的概念,从数学和物理两个方面阐明了相对量子纠缠的意义。对于有限维或无限维的向量空间$W$,在$W$的自同态集$End(W)$上引入了所谓的张量积划分(TPP),并在$End(W)$的TPP集和$W$的张量积结构(TPS)集之间建立了自然的对应关系.作为一个副产品,它表明,一个任意给定的波函数属于一个n维希尔伯特空间,$n$不是素数,可以解释为一个可分离的状态相对于一些人造TPS,从而量子纠缠态的多体系统相对于“上帝给”的TPS可以被视为一个量子态在某种意义上没有纠缠。引入了标准观测量集的概念,探讨了TPP对象的基本结构,并建立了它与实际物理测量的联系。

英文摘要:

Mathematical foundation of the novel concept of quantum tensor product by Zanardi et al is rigorously established. The concept of relative quantum entanglement is naturally introduced and its meaning is made clear both mathematically and physically. For a finite or an infinite dimensional vector space $W$ the so called tensor product partition (TPP) is introduced on $End(W)$, the set of endmorphisms of $W$, and a natural correspondence is constructed between the set of TPP's of $End(W)$ and the set of tensor product structures (TPS's) of $W$. As a byproduct, it is shown that an arbitrarily given wave function belonging to an n-dimensional Hilbert space, $n$ being not a prime number, can be interpreted as a separable state with respect to some man-made TPS, and thus a quantum entangled state of a many-body system with respect to the "God-given" TPS can be regarded as a quantum state without entanglement in some sense. The concept of standard set of observables is also introduced to probe the underlying structure of the object TPP and to establish its connection with practical physical measurement.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑